Linux, Music, Synthesizers, Photos, Books, Cars and More by Peter Kamphuis
New web pages since October 2022, combining my old www.campacasa.eu, linux.campacasa.eu, photo.campacasa.eu and synth.campacasa.eu websites and adding new content.
All Articles · Books · Cars · Linux · Music · Photos · Postcards · TTSH
More than one month has passed, but finally I have managed to get all the required components. I was still missing the 2N4125 transistors for the small VCO boards and 4 ceramic capacitors of 5pF. As replacement for latter I got some 5.1pF capacitors through some relatives in the …
At Mod Wiggler I've found some hints and a circuit for transistor matching. I've built that circuit on stripboard and now can start with the transistor matching: The TTSH design uses various pairs of 2N3904 and 2N3906 transistors. These pairs should each have a very similar base-emitter voltage (within 2 mV difference).
Many components are available now, a few remaining that are still missing should arrive soon. It's about time to start soldering. Before doing so, I have sorted all resistors and capacitors:
Meanwhile I have ordered a long list of components at Mouser. Together with the TTSH order confirmation, a link to a project at Mouser was provided. This project has 138 positions, of which unfortunately a few items were not in stock. The Mouser project, however, also is not complete: A …
On Saturday, February 14, 2015 my long desired delivery arrived:
For some backgrounds on my interest in music synthesizers, see the article about Synthesizers.
Early 2014 I came across information about a scaled ARP 2600 remake as DIY kit from The Human Comparator in Sweden, called TTSH – Two Thousand Six Hundred. Hey, that looked nice, why not give it a …
